494613978 has 16 divisors (see below), whose sum is σ = 989927136. Its totient is φ = 164754800.

The previous prime is 494613971. The next prime is 494613979. The reversal of 494613978 is 879316494.

It is a self number, because there is not a number n which added to its sum of digits gives 494613978.

It is not an unprimeable number, because it can be changed into a prime (494613971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19701 + ... + 37112.

It is an arithmetic number, because the mean of its divisors is an integer number (61870446).

Almost surely, 2^494613978 is an apocalyptic number.

494613978 is an abundant number, since it is smaller than the sum of its proper divisors (495313158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494613978 is a wasteful number, since it uses less digits than its factorization.

494613978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58269.

The product of its digits is 1306368, while the sum is 51.

The square root of 494613978 is about 22239.9185699948. The cubic root of 494613978 is about 790.8403054629.

The spelling of 494613978 in words is "four hundred ninety-four million, six hundred thirteen thousand, nine hundred seventy-eight".